In defence of marcus caelius or pro caelio. Marcus tullius cicero, or just cicero, was a roman politician who lived from 106-43 bce. He was an optimate and a novus homo. We"re reading one of cicero"s courtroom speeches, most commonly known in latin as the pro. Caelio, translated in your book as in defense of marcus caelius. Less than a decade after catelarian conspiracy. Cicero delivered the speech in 56 bce. This was less than a decade after the catilinarian conspiracy. (it"s also worth noting that in 52 bce, the year in which clodius was killed, both caelius and. Cicero lived in rome, and this speech was for a court in the city. In 56 bce lucius sempronius atratinus, son of lucius calpurnius bestia, and (maybe) publius. Clodius pulcher prosecuted marcus caelius rufus on the charge of vis. He defended himself, with the support of marcus licinius crassus and marcus tullius cicero.